OpenCV Floodfill ImageView和Mat的高度和宽度不同

Question

我正在将一个Image（Drawable）加载到Mat中，然后将其转换为ImageView的Bitmap。

private void setupImageView() {

    originalImage = new Mat();
    workingImage = new Mat();
    mask = new Mat();

    // Load Drawable into Mat
    try {
        originalImage = Utils.loadResource(this, R.drawable.image, Imgcodecs.CV_LOAD_IMAGE_UNCHANGED);
    } catch (IOException e) {
        e.printStackTrace();
    }

    // Convert for needed 3 channels
    Imgproc.cvtColor(originalImage, workingImage, Imgproc.COLOR_RGB2BGR);

    // Convert Mat to Bitmap for ImageView
    Bitmap bm = Bitmap.createBitmap(workingImage.cols(), workingImage.rows(), Bitmap.Config.ARGB_8888);
    Utils.matToBitmap(workingImage, bm);

    imageView.setImageBitmap(bm);

    // Create a new Mat Object
    // Mask should be 2 pixels wider and 2 pixels taller than the originalImage
    mask.create(workingImage.rows() + 2, workingImage.cols() + 2, CV_8UC1);
}

在ImageView内部单击时，无法识别单击，因为它们位于填充算法的Mat对象之外。

@OnTouch(R.id.imageview)
boolean onTouch(View v, MotionEvent event) {

    if (event.getAction() == MotionEvent.ACTION_DOWN) {

        Point seed = new Point(event.getX(), event.getY());

        ....
    }
    return true;
}

为什么Mat和ImageView的高度和宽度不同？ 我需要更改什么，我的点击是否已注册？